County annual report · FIPS 19129
2023 Mills County, IA Power Outage Report
In 2023, customers in Mills County, IA went without power for an average of 1.5 hours, a total of 11K customer-hours (Iowa average 2.0 hours). That ranks 55th worst of 99 Iowa counties and 2502nd of 2,977 nationally.
Compared with IA, the US and 2022
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Mills County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 7, 2023 18:00 | March 7, 2023 20:00 | 2h | 1,968 | 1,109 |
| 2 | April 1, 2023 05:15 | April 1, 2023 07:45 | 2h 30m | 623 | 1,513 |
| 3 | May 12, 2023 17:30 | May 12, 2023 18:30 | 1h | 474 | 399 |
| 4 | July 12, 2023 11:45 | July 12, 2023 23:15 | 11h 30m | 309 | 870 |
| 5 | July 5, 2023 01:45 | July 5, 2023 15:30 | 13h 45m | 228 | 785 |
| 6 | January 18, 2023 22:30 | January 19, 2023 01:15 | 2h 45m | 202 | 433 |
| 7 | January 27, 2023 17:00 | January 27, 2023 19:45 | 2h 45m | 185 | 418 |
| 8 | February 27, 2023 04:45 | February 27, 2023 17:00 | 12h 15m | 173 | 772 |
| 9 | February 23, 2023 00:45 | February 23, 2023 01:45 | 1h | 171 | 171 |
| 10 | May 11, 2023 15:00 | May 11, 2023 17:00 | 2h | 169 | 265 |
Outage episodes by size in 2023: 14 reached 100+ customers, 1 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Mills County reported on EIA Form 861 for 2023, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| MidAmerican Energy Co | 2023 | 2.8 hrs | 1.13 | 78 min | 0.83 |
| Southwest Iowa Rural Elec Coop | 2018 | 2.4 hrs | 1.69 | 1.6 hrs | 1.21 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Iowa's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 7,270 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Mills County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mills County, IA annual power outage report, 2023, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2023/iowa/mills-county